<template>
  <div class="xtx-numbox">
    <div class="label" v-if="label">{{label}}</div>
    <div class="numbox">
        <a @click="changeNum(-1)" href="javascript:;" >-</a>
        <input type="text" :value="modelValue" readonly>
    <a @click="changeNum(1)" href="javascript:;" >+</a>
    </div>
  </div>
</template>

<script>
import { useVModel } from '@vueuse/core'
export default {
  name: 'XtxNumbox',
  props: {
    modelValue: {
      type: Number,
      default: 1
    },
    label: {
      type: String,
      default: ''
    },
    min: {
      type: Number,
      default: 1
    },
    max: {
      type: Number,
      default: 10
    }
  },
  setup (props, { emit }) {
    // 使用vue-use中usevmodel数据绑定通知父组件修改count值
    const count = useVModel(props, 'modelValue', emit)
    console.log(count)
    const changeNum = (step) => {
      const newValue = count.value + step
      console.log(newValue)
      if (newValue < props.min || newValue > props.max) return
      // 更改父组件值
      count.value = newValue
      console.log(newValue);
      emit('change', newValue)
    }
    return { changeNum }
  }

}
</script>

<style scoped lang="less">
.xtx-numbox{
    display: flex;
    align-items: center;
.label{
    width: 60px;
    color: #999;
    padding-left: 10px;
}
.numbox{
    display: flex;
     width: 120px;
    height: 30px;
    border: 1px solid #e4e4e4;
    >a{
          width: 29px;
      line-height: 28px;
      text-align: center;
      background: #f8f8f8;
      font-size: 16px;
      color: #666;
       &:first-of-type {
        border-right:1px solid #e4e4e4;
      }
      &:last-of-type {
        border-left:1px solid #e4e4e4;
      }
    }
    >input{
           width: 60px;
      padding: 0 5px;
      text-align: center;
      color: #666;
    }
}
}

</style>
